Home / 3,105.48-4,284.32-1,778.46

Finding the Fourth Proportional to 3,105.48, 4,284.32 and 1,778.46

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Solution

The fourth proportional to 3,105.48, 4,284.32 and 1,778.46 is: 2,453.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.48 : 4,284.32 = 1,778.46 : x
  2. Step 2: Convert to fraction form
    3,105.48/4,284.32 = 1,778.46/x
  3. Step 3: Cross multiply
    3,105.48x = 4,284.32 × 1,778.46
  4. Step 4: Simplify right side
    3,105.48x = 7,619,491.75
  5. Step 5: Solve for x
    x = 7,619,491.75/3,105.48
  6. Step 6: Final answer
    x = 2,453.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.